<?php
function number_to_text($number)
{
    switch ($number)
    {
        case 1:return 'one';
        case 2:return 'two';
        case 3:return 'three';
        case 4:return 'four';
        case 5:return 'five';
        case 6:return 'six';
        case 7:return 'seven';
        case 8:return 'eight';
        case 9:return 'nine';
        default: return $number;   
    }
}